HDR OLED display power control
AssigneeMicrosoft Technology Licensing, LLC
InventorsNobuyuki Suzuki, Baek Woon Lee, Ying Zheng, Samu Matias Kallio, Kari Jussi Ropo
Life of this patent
Estimating the term…
Abstract
An organic light emitting diode (OLED) display system comprises an OLED array and a power management system that includes at least one voltage generator for the OLED array. A timing microcontroller comprises a decoder/encoder configured to receive HDR pixel data and output display pixel data. A portion of the HDR pixel data is sampled and a luminance index value of the sampled portion is determined, where the luminance index value corresponds to a maximum luminance of the sampled portion. The luminance index value is used to control the at least one voltage generator to reduce power consumption of the OLED display system.
Claims20
An organic light emitting diode (OLED) display system configured to reproduce high dynamic range (HDR) video and reduce power consumption, the OLED display system comprising:
- an OLED array of OLED pixels;
- a power management system configured to provide power to the OLED pixels, the power management system comprising a plurality of voltage generators that generate OLED voltages for OLED emission in the OLED array;
- a timing microcontroller comprising a decoder/encoder configured to receive HDR pixel data and output display pixel data;
- and
- a memory storing instructions executable by the timing microcontroller to, for each sampling rate of a plurality of sampling rates of HDR pixel data:
- sample a sampled portion of the HDR pixel data;
- determine a luminance index value of the sampled portion of the HDR pixel data, wherein the luminance index value corresponds to a maximum luminance of the sampled portion of the HDR pixel data;
- and
- use the luminance index value to control a portion of the plurality of voltage generators to generate different pixel DAC reference voltages for different OLED pixels in the OLED array to dynamically adjust a default maximum luminance capability of the OLED pixels to a runtime maximum luminance capability that is lower than the default maximum luminance capability.
At an organic light emitting diode (OLED) display system configured to reproduce high dynamic range (HDR) video via an OLED array, a method for reducing power consumption of the OLED display system, the method comprising:
- receiving HDR pixel data from an HDR data source;
- and
- for each sampling rate of a plurality of sampling rates of the HDR pixel data:
- sampling a sampled portion of the HDR pixel data;
- determining a luminance index value of the sampled portion of the HDR pixel data, wherein the luminance index value corresponds to a maximum luminance of the sampled portion of the HDR pixel data;
- and
- using the luminance index value to control a plurality of voltage generators to generate different EL cathode bias voltages for different OLED pixels in the OLED array to dynamically adjust a default maximum luminance capability of the OLED pixels to a runtime maximum luminance capability that is lower than the default maximum luminance capability.
A computing device comprising an organic light emitting diode (OLED) display system having a default maximum luminance capability, the OLED display system configured to reproduce high dynamic range (HDR) video, the OLED display system comprising:
- an OLED array of OLED pixels;
- a power management system configured to provide power to the OLED pixels, the power management system comprising a plurality of voltage generators that generate OLED voltages for OLED emission in the OLED array;
- a timing microcontroller comprising a decoder/encoder configured to receive HDR pixel data and output display pixel data;
- and
- a memory storing instructions executable by the timing microcontroller to, for each sampling rate of a plurality of sampling rates of the HDR pixel data:
- sample a sampled portion of the HDR pixel data;
- determine a luminance index value of the sampled portion of the HDR pixel data, wherein the luminance index value corresponds to a maximum luminance of the sampled portion of the HDR pixel data;
- and
- use the luminance index value to control a portion of the plurality of voltage generators to generate different pixel DAC reference voltages for different OLED pixels in the OLED array to dynamically adjust the default maximum luminance capability of the OLED pixels to a runtime maximum luminance capability that is lower than the default maximum luminance capability.
Dependencies are inferred from the claim text.